/**
 * #      1636
 * 名称   按照频率将数组升序排序
 * 链接   https://leetcode-cn.com/problems/sort-array-by-increasing-frequency
 * 题解   [125](https://leetcode-cn.com/problems/sort-array-by-increasing-frequency/solution)
 * 通过率 71.1%
 * 难道   简单
 */

